Chelsea striker Didier Drogba was knocked unconscious during Saturday's 3-1 win over Norwich City but is showing "progressive signs of recovery", coach Andre Villas-Boas said.
The Ivorian was drafted back into the starting lineup to partner Fernando Torres up front but was accidentally punched as Norwich goalkeeper John Ruddy came out to meet the ball.
Droga was already unconscious from the punch and hit the ground awkwardly.
He did not move initially as medics attended to him but he then started to flex his arms before being stretchered off. The game ended up having 11 minutes of stoppage time.
"He will have a full exam. He was completely unconscious," the Portuguese coach said.
"The doctor did a great job. He is showing progressive signs of recovery. We hope for his wellbeing as a person first."
